A microwave assisted diazo coupling reaction: The synthesis of alkylazines and thienopyridazines

S Al-Mousawi, AZ Elassar…

Index: Al-Mousawi, Saleh; Elassar, Abdel-Zaher; El-Apasery, Morsy Phosphorus, Sulfur and Silicon and the Related Elements, 2006 , vol. 181, # 8 p. 1755 - 1771

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Citation Number: 13

Abstract

Heating diazoaminobenzene with active methylene compounds 1–3 in microwave oven in acetic acid, in the presence of hydrochloric acid, afforded the corresponding arylhydrazones 5–7. These reaction products were condensed with ethyl cyanoacetate in a domestic microwave oven after 1–2 minutes heating to yield the pyridazinones 8–12. Compounds 8c and 12 reacted with sulfur in basic DMF solution, in microwave oven using MORE ...